Britax First Class Si User Manual page 16

5
The newborn insert can now be removed.
IMPORTANT –
MUST now be adjusted.
7
Ensure that the strap adjuster goes through to
the underside of the seat shell, and ensure that
it rests horizontally so that it can't be pulled
back through the shell. Pull on the buckle to
make sure that it is secure and that the strap
adjuster does not come back through.
Re-installing the insert
Follow the steps above in reverse order.
The crotch strap
6
The crotch strap length will now need
shortening. To do this, rotate the exposed
metal strap adjuster and push it through the
slot in the cover and the seat body. Pull on the
buckle to ensure that the adjuster does not slip
though. The buckle strap is now the correct
length to be used without the insert.
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